While pricing a new cam - the DC engine book says I need these springs.

Well, that sounds like a nice combo.
Do note that MP is no longer keeping up with there parts. What ever is left over is all there is.

P3614542; 1.67 - 1.70 installed height / Dual/damper
Spring O.D./ 1.45 O.D.
Wire Diameter .185
Cam lift range .500-.610
Closed pressure @ 1.67 / 110lbs.
Open pressure @ 1.27 / 295lbs.

Least posted before I could get the next specs in so just scroll down to the next post for specs.